#define  _CRT_SECURE_NO_WARNINGS 1


bool isSameTree(struct TreeNode* p, struct TreeNode* q) {
    if (p == NULL && q == NULL)
    {
        return true;
    }

    if (p == NULL || q == NULL)
    {
        return false;
    }

    if (p->val != q->val)
    {
        return false;
    }

    return isSameTree(p->left, q->left)
        && isSameTree(p->right, q->right);
}